PDOException SQLSTATE[HY000] [2002] No such file or directory

Question

I believe that I've successfully deployed my (very basic) site to fortrabbit, but as soon as I connect to SSH to run some commands (such as php artisan migrate or php artisan db:seed) I get an error message:

[PDOException]
SQLSTATE[HY000] [2002] No such file or directory

At some point the migration must have worked, because my tables are there - but this doesn't explain why it isn't working for me now.

Answer 1

One of simplest reasons for this error is that a MySQL server is not running. So verify that first. In case it's up, proceed to other recommendations:

Laravel 4: Change "host" in the app/config/database.php file from "localhost" to "127.0.0.1"

Laravel 5+: Change "DB_HOST" in the .env file from "localhost" to "127.0.0.1"

I had the exact same problem. None of the above solutions worked for me. I solved the problem by changing the "host" in the /app/config/database.php file from "localhost" to "127.0.0.1".

Not sure why "localhost" doesn't work by default but I found this answer in a similar question solved in a symfony2 post. https://stackoverflow.com/a/9251924

Update: Some people have asked as to why this fix works so I have done a little bit of research into the topic. It seems as though they use different connection types as explained in this post https://stackoverflow.com/a/9715164

The issue that arose here is that "localhost" uses a UNIX socket and can not find the database in the standard directory. However "127.0.0.1" uses TCP (Transmission Control Protocol), which essentially means it runs through the "local internet" on your computer being much more reliable than the UNIX socket in this case.

Answer 2

The error message indicates that a MySQL connection via socket is tried (which is not supported).

In the context of Laravel (artisan), you probably want to use a different / the correct environment. Eg: php artisan migrate --env=production (or whatever environment). See here.

Answer 3

I got the same problem and I'm running Mac OS X 10.10 Yosemite. I have enabled the Apache Server and PHP that already comes with the OS. Then I just configured the mCrypt library to get started. After that when I was working with models and DB I got the error:

[PDOException]
SQLSTATE[HY000] [2002] No such file or directory

The reason I found is just because PHP and MySQL can't get connected themselves. To get this problem fixed, I follow the next steps:

1. Open a terminal and connect to the mysql with:

   mysql -u root -p
   

2. It will ask you for the related password. Then once you get the mysql promt type the next command:

   mysql> show variables like '%sock%'
   

3. You will get something like this:

   +-----------------------------------------+-----------------+
   | Variable_name                           | Value           |
   +-----------------------------------------+-----------------+
   | performance_schema_max_socket_classes   | 10              |
   | performance_schema_max_socket_instances | 322             |
   | socket                                  | /tmp/mysql.sock |
   +-----------------------------------------+-----------------+
   

4. Keep the value of the last row:

   /tmp/mysql.sock
   

5. In your laravel project folder, look for the database.php file there is where you configure the DB connection parameters. In the mysql section add the next line at the end:

   'unix_socket' => '/tmp/mysql.sock'
   

6. You must have something like this:

   'mysql' => array(
           'driver'    => 'mysql',
           'host'      => 'localhost',
           'database'  => 'SchoolBoard',
           'username'  => 'root',
           'password'  => 'venturaa',
           'charset'   => 'utf8',
           'collation' => 'utf8_unicode_ci',
           'prefix'    => '',
           'unix_socket' => '/tmp/mysql.sock',
       ),
   

Now just save changes, and reload the page and it must work!

Answer 4

I encountered the [PDOException] SQLSTATE[HY000] [2002] No such file or directory error for a different reason. I had just finished building a brand new LAMP stack on Ubuntu 12.04 with Apache 2.4.7, PHP v5.5.10 and MySQL 5.6.16. I moved my sites back over and fired them up. But, I couldn't load my Laravel 4.2.x based site because of the [PDOException] above. So, I checked php -i | grep pdo and noticed this line:

pdo_mysql.default_socket => /tmp/mysql.sock => /tmp/mysql.sock

But, in my /etc/my.cnf the sock file is actually in /var/run/mysqld/mysqld.sock.

So, I opened up my php.ini and set the value for pdo_mysql.default_socket:

pdo_mysql.default_socket=/var/run/mysqld/mysqld.sock

Then, I restarted apache and checked php -i | grep pdo:

pdo_mysql.default_socket => /var/run/mysqld/mysqld.sock => /var/run/mysqld/mysqld.sock

That fixed it for me.

Answer 5

The answer from @stuyam solved the "No such file or directory" issue for me

Short answer: Change "host" in the /app/config/database.php file from "localhost" to "127.0.0.1"

But then I had a "Connection refused" error. If anyone had the same issue, my solution for this was to update the app/config/local/database.php file so the port is 8889:

'mysql' => array(
        'driver'    => 'mysql',
        'host'      => '127.0.0.1',
        'port'      => '8889',
        'database'  => 'databaseName',
        'username'  => 'root',
        'password'  => 'root',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
    ),

Answer 6

In my case i had no problem at all, just forgot to start the mysql service...

sudo service mysqld start

Answer 7

If you are using Laravel Homestead, make sure you're calling the commands on the server.

homestead ssh

Then simply cd to the right directory and fire your command there.

Answer 8

It worked after I change from DB_HOST=localhost to DB_HOST=127.0.0.1 at .env file

Answer 9

This is because PDO treats "localhost" host specially:

Note: Unix only: When the host name is set to "localhost", then the connection to the server is made thru a domain socket. If PDO_MYSQL is compiled against libmysqlclient then the location of the socket file is at libmysqlclient's compiled in location. If PDO_MYSQL is compiled against mysqlnd a default socket can be set thru the pdo_mysql.default_socket setting.

(from http://php.net/manual/en/ref.pdo-mysql.connection.php)

Changing localhost to 127.0.0.1 will "force" the use of TCP.

Note: mysqli_connect is working fine with localhost.

Answer 10

Add mysql.sock path in database.php file like below example

'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock',

Eample

'mysql' => [
        'driver' => 'mysql',
        'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock',
        'host' => env('DB_HOST', 'localhost'),
        'port' => env('DB_PORT', '8889'),

Answer 11

Mamp user enable option Allow network access to MYSQL

Answer 12

Step 1

Find the path to your unix_socket, to do that just run netstat -ln | grep mysql

You should get something like this

unix  2      [ ACC ]     STREAM     LISTENING     17397    /var/run/mysqld/mysqld.sock

Step 2

Take that and add it in your unix_socket param

'mysql' => array(
            'driver'    => 'mysql',
            'host'      => '67.25.71.187',
            'database'  => 'dbname',
            'username'  => 'username',
            'password'  => '***',
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
            'unix_socket'    => '/var/run/mysqld/mysqld.sock' <-----
            ),
        ),

Hope it helps !!

Answer 13

Building on the answer from @dcarrith ...

Instead of editing the config files, I created an alias in the location that PHP is looking that connects to the real mysql.sock. (source)

Just run these two commands (no restart needed):

mkdir /var/mysql
ln -s /tmp/mysql.sock /var/mysql/mysql.sock

Answer 14

I'm running on MAMP Pro and had this similar problem when trying to migrate (create db tables). Tried a few of these mentioned suggestions as well but didn't do it for me.

So, simply (after an hour googling), I added two things to the /config/database.php.

'port' => '1234',
'unix_socket' => '/path/to/my/socket/mysqld.sock'

Works fine now!

Answer 15

Just i do one change in .env file

I have following line of code.

DB_CONNECTION=mysql
DB_HOST=localhost
DB_PORT=3306
DB_DATABASE=database_name
DB_USERNAME=root
DB_PASSWORD=

Change host name localhost to 127.0.0.1

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=database_name
DB_USERNAME=root
DB_PASSWORD=

That is work in my case because that can't find any hostname like localhost

And after changing hostname write following command

php artisan config:clear
php artisan migrate:install
php artisan migrate

Answer 16

I had this problems when I was running my application using docker containers.

The solution was put the name of the MySQL service container I was using in docker_compose.yml on DB_HOST. In my case, it was db :

DB_HOST=db

Hope it helps.

Answer 17

I had similar problems accessing my Drupal website. I fixed it by opening the command line, and restarting my MySQL server or service:

service mysqld restart

This should work. If it doesn't, restart your local webserver:

service httpd restart

That should be enough. Hope it works for other environments, too. Note that these commands generally require superuser privileges.

Answer 18

I ran into this problem when running PHPUnit in Elixir/Gulp, and Homestead as my Vagrant enviroment.

In my case I edited the .env file from DB_HOST=localhost to DB_HOST=192.168.10.10 where 192.168.10.10 is the IP of my Vagrant/Homestead host.

Answer 19

Check your port carefully . In my case it was 8889 and i am using 8888. change "DB_HOST" from "localhost" to "127.0.0.1" and vice versa

Answer 20

I had the same problem using Docker and MySQL service name db in docker_compose.yml file:

I added the following in the .env file:

DB_HOST=db

you should also assure that your host is discoverable from the php app.

It was because PHP didn't figure out which host to use to connect.

Answer 21

I got the same problem in ubuntu 18.04 with nginx. By following the below steps my issue has been fixd:

First open terminal and enter into mysql CLI. To check mysql socket location I write the following command.

mysql> show variables like '%sock%'

I got something like the below :

+-----------------------------------------+-----------------------------+
| Variable_name                           | Value                       |
+-----------------------------------------+-----------------------------+
| mysqlx_socket                           | /var/run/mysqld/mysqlx.sock |
| performance_schema_max_socket_classes   | 10                          |
| performance_schema_max_socket_instances | -1                          |
| socket                                  | /var/run/mysqld/mysqld.sock |
+-----------------------------------------+-----------------------------+
4 rows in set (0.00 sec)

In laravel project folder, look for the database.php file in the config folder. In the mysql section I modified unix_socket according to the above table.

'mysql' => array(
        'driver'    => 'mysql',
        'host'      => '127.0.0.1',
        'database'  => 'database_name',
        'username'  => 'username',
        'password'  => 'password',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'unix_socket' => '/var/run/mysqld/mysqld.sock',
    ),

Now just save changes, and reload the page and it worked.

Answer 22

As of Laravel 5 the database username and password goes in the .env file that exists in the project directory, e.g.

DB_HOST=127.0.0.1
DB_DATABASE=db1
DB_USERNAME=user1
DB_PASSWORD=pass1

As you can see these environment variables are overriding the 'forge' strings here so changing them has no effect:

    'mysql' => [
        'driver'    => 'mysql',
        'host'      => env('DB_HOST', 'localhost'),
        'database'  => env('DB_DATABASE', 'forge'),
        'username'  => env('DB_USERNAME', 'forge'),
        'password'  => env('DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],

More information is here https://mattstauffer.co/blog/laravel-5.0-environment-detection-and-environment-variables

Answer 23

Attempt to connect to localhost:

SQLSTATE[HY000] [2002] No such file or directory

Attempt to connect to 127.0.0.1:

SQLSTATE[HY000] [2002] Connection refused

OK, just comment / remove the following setting from my.cnf (on OS X 10.5: /opt/local/etc/mysqlxx/my.cnf) to obtain:

[mysqld]
# skip-networking

Of course, stop and start MySQL Server.

Answer 24

solved

in my case it was a logic issue in code, the connection values are in a if statement:

if($_SERVER['HTTP_HOST'] == "localhost")

so the solution was to add a pipe and add 127.0.0.1, that solved the problem for me

if($_SERVER['HTTP_HOST'] == "localhost" || $_SERVER['HTTP_HOST'] == "127.0.0.1")

Answer 25

If you are using Laravel Homestead, here is settings

(include Vagrant-Virtual Machine)

.bash-profile

alias vm="ssh vagrant@127.0.0.1 -p 2222"

database.php

    'mysql' => [
        'driver'    => 'mysql',
        'host'      => env('DB_HOST', '127.0.0.1'),
        'database'  => env('DB_DATABASE', 'homestead'),
        'username'  => env('DB_USERNAME', 'homestead'),
        'password'  => env('DB_PASSWORD', 'secret'),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],

Terminal

vm

vagrant@homestead:~/Code/projectFolder  php artisan migrate:install

Answer 26

If anyone are still looking for the answer, just check your .env file. For some reason laravel create a .env.example file, so all this answers didn't work for me. I fixed my issue renamming .env.example to .env

Answer 27

This happened to me because MySQL wasn't running. MySQL was failing to start because I had a missing /usr/local/etc/my.cnf.d/ directory.

This was being required by my /usr/local/etc/my.cnf config file as a glob include (include /usr/local/etc/my.cnf.d/*.cnf).

Running mkdir /usr/local/etc/my.cnf.d, and then starting MySQL, fixed the issue.

Answer 28

In my case, I was running php artisan migrate on my mac terminal, when I needed to ssh into vagrant and run it from there. Hope that helps someone the headache.

Answer 29

In my case I had to remove the bootstrap/cache folder and try it again.

My cenario was after a server migration.

UPDATED AND WORKING

1. Remove folder "cache" from bootstrap (booststrap/cache)
2. Copy folder "cache" from original folder and paste it in bootstrap
3. Run these commands: 3.1) php artisan config:cache 3.2) php artisan migrate 3.3) php artisan db:see 3.4) php artisan serve

That's all.

Answer 30

When using a VirtualMachine make sure you ssh into that machine and navigate to your App folder and call the php artisan migrate command from there.

Answer 31

In may case, I'd simply used

vagrant up

instead of

homestead up

for my forge larval setup using homestead. I'm assuming this meant the site was getting served, but the MySQL server wasn't ever booted. When I used the latter command to launch my vagrant box, the error went away.

Answer 32

All these answers seem like heavy lifting...

I just created a .env file; edited my bootstrap/app.php file, and uncommented the following line...

Dotenv::load(__DIR__.'/../');

Hope this helps someone

Answer 33

For anyone trying to create a fresh db connection not on laravel but bumped here seeking for answers to run PDO from the Terminal. This would be of help to you. And you can refactor it to work best for you.

<?php

class db
{
   private $DBHOST = 'localhost'; // you don't need 127.0.0.1
   private $DRIVER = 'mysql';
   private $PORT   = '8888'; // database port. 8888 is mine
   private $DB     = 'example-db';
   private $PASS   = 'example-pass';
   private $USER   = 'root';
   private $SOCKS  = ''; // can fill this or leave blank.


   // - connect (dummy connection)
   private function con()
   {
       if ($this->SOCKS == '')
       {
           // run shell command to get 
           $socks = shell_exec('netstat -ln | grep mysql');
           $socks = trim(substr($socks, strpos($socks, '/')));

           $this->SOCKS = strlen($socks) > 0 ? ';unix_socket='.$socks : '';
       }
       else
       {
          $this->SOCKS = ';unix_socket='.$this->SOCKS;
       }

       $dsn = $this->DRIVER.':host='.$this->DBHOST.';dbname='.$this->DB;

       // add socks
       $dsn .= $this->SOCKS;

       // add port
       $dsn .= (strlen($this->PORT) > 0) ? ';port='.$this->PORT : '';

       // extablish connection
       $con = new PDO($dsn, $user, $pass);

       // return PDO instance.
       return $con;
   }
   // - ends here

   // now you can call $this->con() within class to use connection 
   // would run fine on any terminal

} 

hope it helps!

Answer 34

My answer is specific to Laravel.

I had this message after creating a new connection in the database.php configuration file to a local Docker MySQL service and setting it as the default connection. I forgot that I was setting a different connection by overwriting it in the Model:

class Model extends \Illuminate\Database\Eloquent\Model
{
    protected $connection;

    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);
        $this->connection = 'some_other_connection';
    }
...

So even if my default connection in the database.php file was pointing to the right credentials, the model was still using the remote database connection configuration which I had removed from the local environment file.

Answer 35

To add to @alexventuraio's solution, if you are experiencing this issue on Laravel 5.8, you might want to replace the value of 'unix_socket' in your database config file as thus:

 'mysql' => [
        'driver' => 'mysql',
        'host' => env('DB_HOST', '127.0.0.1'),
        'port' => env('DB_PORT', '3306'),
        'database' => env('DB_DATABASE', 'forge'),
        'username' => env('DB_USERNAME', 'forge'),
        'password' => env('DB_PASSWORD', ''),
        // 'unix_socket' =>'/var/run/mysqld/mysqld.sock',
        'unix_socket' => env('DB_SOCKET', ''), // replace with this line, so you can always add the mysqld.sock from the dotenv file
        'charset' => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix' => '',
        'prefix_indexes' => true,
        'strict' => false,
        'engine' => null,
        'options' => extension_loaded('pdo_mysql') ? array_filter([
            PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
        ]) : [],
    ],

Answer 36

All the existing answers are correct and might work for you. My case was a bit different. I encountered this error when I started a docker project locally using docker-compose up.

The problem for my specific case was that I ran the docker-compose up from a sub-folder instead of the root folder in which the docker-compose file lies.

Make sure you run docker-compose up from the folder where the docker-compose.yml is saved to!

Answer 37

Check your MySQL server is running, if database connection is correct configured.